html[lang="th"] .th{display: block;}
html[lang="th"] .en,
html[lang="th"] .ch{display: none !important;}

html[lang="en"] .en{display: block;}
html[lang="en"] .th,
html[lang="en"] .ch{display: none!important;}

html[lang="th"] .nav.th ,
html[lang="en"] .nav.en ,
html[lang="th"] .box-50th-text.th,
html[lang="en"] .box-50th-text.en {display: flex;}